GR Tracker vs OnboardAssistant
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GR Tracker
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With the GR TRACKER mobile app, participants of sporting events which use services developed by GEORACING can use their smartphones as a GPS tracker. Once started, the GR TRACKER app connects automatically with the GEORACING’s cloud platform and enables to follow in real-time competitors’ performances during the event but also to display indicators such as speed, traveled distance, ranking, timing, GPS positions… Key features of the GR TRACKER app: - Transmits your GPS position in real-time or delayed (if you use WiFi) to GEORACING. - Allows others (organizers, friends, spectators…) to follow the event in live thanks to the dedicated tools developed by GEORACING - Enables comparison between participants - Enables live analysis and post-race analysis at the end of the event Note: To use the GR TRACKER app you must be registered beforehand to an event which uses the services provided by GEORACING. You need to get a code from the organizer in order to use this app. The GR TRACKER app needs an internet connection for the live tracking. Continued use of the GPS running in the background can decrease battery life.
OnboardAssistant
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OnboardAssistant is a handy little tool for yacht racing which will complement your onboard electronics and let you get rid of wet notes. It will let you ping sail changes, race times, changes in boat configuration, incidents, performance comments and any other important user-defined event which is not captured directly by your electronics. It also lets you take pictures, record audio and video while you are out on the water. Once your sailing session is complete you can review and update your notes and upload it all to the cloud. Once in the cloud, the data can be accessed by a number of thrid party tools such as SailingPerformance's RaceReplay. All your data will then be automatically be loaded and synchronized, ready to be analyzed! Terms of use available at: https://www.advancedsailingperformance.com/oba-terms-service.html
Screenshots
Verdict
The clearest difference is update cadence: GR Tracker at fortnightly against OnboardAssistant's every 5 weeks. GR Tracker also leads on iOS requirement (12.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GR Tracker ships an update fortnightly, OnboardAssistant every 5 weeks. The most recent releases landed on September 13, 2026 and September 20, 2026 respectively.
| Parameter | GR Tracker | OnboardAssistant |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 22 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Trimaran | SailingPerformance S.L |
In-app purchases
GR Tracker
No in-app purchases
OnboardAssistant
No in-app purchases
Questions
Is GR Tracker free?
Is OnboardAssistant free?
Do GR Tracker or OnboardAssistant have ads?
Which is updated more often, GR Tracker or OnboardAssistant?
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